<!-- 侧导航 -->
<template>
    <el-menu :collapse-transition="false" default-active="1-4-1"
        class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" :collapse="collapse">
        <el-submenu index="1">
            <template slot="title">
                <i class="el-icon-location"></i>
                <span slot="title">导航一导航</span>
            </template>
            <el-menu-item-group>
                <span slot="title">分组一</span>
                <el-menu-item index="1-1">选项1</el-menu-item>
                <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
                <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
                <span slot="title">选项4</span>
                <el-menu-item index="1-4-1">选项1</el-menu-item>
            </el-submenu>
        </el-submenu>
        <el-menu-item index="2">
            <i class="el-icon-menu"></i>
            <span slot="title">导航二</span>
        </el-menu-item>
        <el-menu-item index="3" disabled>
            <i class="el-icon-document"></i>
            <span slot="title">导航三</span>
        </el-menu-item>
        <el-menu-item index="4">
            <i class="el-icon-setting"></i>
            <span slot="title">导航四</span>
        </el-menu-item>
    </el-menu>
</template>

<script>
import { mapState } from 'vuex';
export default {
    data() {
        return {

        };
    },
    computed: {
        ...mapState('extends/collapse', ['collapse']),
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath);
        }
    }
}

</script>
<style lang='less' scoped>

.el-menu {
    border-right: none;
}
</style>